# Tategoto — Hidden messages, written by AI

> Hidden messages, written by AI (iPhone/iPad app by Yoichi Yamane.)

- Source: https://appshunter.io/ios/app/tategoto/id6794272000 (this page in markdown: same URL + `.md`)
- Developer: [Yoichi Yamane](https://appshunter.io/developer/6794272002)
- Category: Utilities, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English, Japanese, Korean, Chinese (Simplified, China), Chinese (Traditional, Taiwan)
- Released: 2026-07-29
- Data updated: 2026-10-04

## What is Tategoto?

Tategoto lets you hide what you really want to say inside a message that looks completely ordinary.

WHAT IT DOES
You type your true message. AI writes a natural-sounding note, placing one letter of your message at the start of each line. Read down the left edge and the hidden words appear — the wordplay known as an acrostic in English, 縦読み in Japan, 삼행시 in Korea, and 藏頭詩 in China.

NO PROOFREADING NEEDED
Tategoto checks every line against your hidden message automatically, and quietly rewrites any line that drifts. You never have to count letters yourself.

NO SUBSCRIPTION
By default it runs on Apple Intelligence, the AI built into your iPhone. Nothing you type is sent anywhere, and there is no monthly fee. If you already have an API key for Claude, ChatGPT, or Gemini, you can switch to it in Settings for noticeably more natural writing — Gemini has a free tier that is generous enough for everyday use.

FITS WHERE YOU'RE SENDING IT
Choose whether you're pasting into a messaging app or an email, and line lengths adjust so the text won't wrap on the recipient's screen and break the hidden reading.

SMALL THINGS THAT MATTER
• Name the recipient, or ask for specific words to be woven in
• Rewrite any single line, as many times as you like, free
• Edit the whole text freely before you copy it
• Common messages appear instantly, without using AI at all

FIVE LANGUAGES
English, Japanese, Korean, Simplified Chinese, and Traditional Chinese. Tategoto detects the language of your hidden message and writes in the form that fits that culture.

PRICING
Free for your first five messages. After that, a single one-time purchase unlocks unlimited use. No subscription, ever.

Some things are easier to say sideways.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Tategoto Pro | $4.99 | one-time |


## Is Tategoto safe?

Not enough ratings yet to assess Tategoto.

## Is Tategoto legit?

Tategoto has limited verification signals. The AppsHunter Legitimacy Score for Tategoto is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.0.1 — 2026-08-09

- Expanded the built-in example messages for more natural results
- Improved generation reliability
- Added English, Korean, Simplified Chinese, and Traditional Chinese store listings

### 1.0 — 2026-07-29

No release notes.

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## More apps by Yoichi Yamane

- [Mokuroku: Shopping & Packing](https://appshunter.io/ios/app/mokuroku-shopping-and-packing/id6803483014)

All apps by Yoichi Yamane: https://appshunter.io/developer/6794272002

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-04.*